00:01
A transaction in a database is a logical unit of work that consists of a sequence of one or more database operations, such as reads, writes, updates, or deletes, that are treated as a single, indivisible unit.
00:11
Several properties define what makes a sequence of database operations a transaction, including atomicity.
00:21
This ensures that either all operations in the transaction are completed successfully and the changes are committed to the database, or none of the operations are executed and the database remains unchanged.
00:30
Changed.
00:31
In other words, a transaction is atomic if it's treated as a single all -or -nothing operation.
00:36
If any part of the transaction fails, the entire transaction is rolled back and the database is restored to its state before the transaction began.
00:48
Consistency ensures the database remains in a consistent state before and after the transaction, regardless of whether the transaction is successful or fails...